Machine for making shingles and method of cleaning and lubricating dies



5 Sheets-Sheet l July 31, 1923.

$- M. FORD MACHINE FOR MAKNG SHINGLES AND METHOD OF CLEANING ANDLUBRICATING DIES-v i Filed oct. 10. 1919 s .NQ alg.

N INNN July 31, 1923. f s. M. FORD MACHINE FOR MAKING SHINGLES ANDMETHOD-OF CLEANING AND LUBRICATING DIES 5 Sheets-Sheet 2 Filed Oct. l0,1919 `uly 31, 1923.

S. M. FORD MACHINE FOR MAKING SHINGLES AND METHOD oF CLEANING ANDLUBRICATING DIES File Oct. l0, 1919 5 Sheets-Sheet 5 f r fzf l July 31,1923.

S. M. FORD MACHINE FOR MAKING SHINGLES AND METHOD QF CLEANING ANDLUBRICATING DIES Filed Oct. l0 1919 5 Sheets-Sheet 4 July 31, 1923. www@S. M. FORD MACHINE FOR MAKING SHINGLES AND 'METHOD OF CLEANING ANDLUBRICATING DIES Patented July 31, 1923.

-UNITED STATES l A 1,463,314 PATENT OFFICE.

SILAS M. FORD, 0F ST. PAUL, MINNESOTA.

MACHINE FOR MAKING SHINGLES AND METHOD 0F CLEANING AND LUBRICTING DIES.

Application led October 10, 19,19. Serial No. 329,874.

To all whom, ztmay concern.' Be it known that I, SILAs M. Fono, acitizen of the United States, and a resident of St. Paul, in the countyof Ramsey and State of Minnesota, have invented certain new and usefulImprovements in a Machine for Making Shingles and Methods of Cleaningand Lubricating Dies, of which the following 1s a s ecificatlon. neobject of my invention is to provid in a shingle making machine.improved means for actuating the dies used in blanking and the dies usedin forming shingles of the style usually referred to as shingle strips,and ordinarily made of asphalt impregnated felt.

Another object is to provide in a machine of the` class described meansfor cleaning and lubricatin the dies.

Another ob]ect is to provide means for lubricating the lock bolts usedin locking together co-operating die bars during the actual dieoperations.

Another object is to provide an improved form of spring mounted guidesfor the cooperating die bars.

Another object is to provide a method of cleaning and lubricating dies,the method being suitable for any type 0f dies, whether used intravelling die bars or stationary, in a unch press or the like.

- 7ith these and incidental objects in view, the invention consists ofcertain novel features of construction and combination of arts, the-essential elements of which are liereinafter described with referenceto the drawings which accompany and form a part of this specification.

In the drawings, Figure 1 is a section taken on the line 1-1, Figure 5;Figure 2 is an enlarged side elevation detail showing the means providedfor forcibly moving the upper dies down into the cleaning andlubricating compound; Figure 3 is an enlarged cross sectional detailtaken on the line 3-3, Figure2; Figure 4 is an end view of the cam shownin Figure 2; Figure 5 is an end view of my machine; Figure 6 is anenlarged end view of one of the lower die bars, showing the locking barin the position where it may dip into the cleaning and lubricatingcompound; Figure 7 is an enlarged sectional detail of the part shown inFigure 2 and showing the position of two of the dies;

- Figure 8 is a section taken on the line 8 8,

Figure 10; Fi ure 9 is an enlarged side elevation detail s owing thespring controlled means for holding the die bar guides; Fighe machineshown herein is in general similar to the one shown in my co-pendingapplication #315,032, filed August 2, 1919, and entitled Machine formaking shingles, and also discloses improvements to the machinedisclosed in the ap licatiori for patent of Henry Wulff, Seria Number247,339, filed July 29,1918, for machine and method for making shingles.

As shown in Figures 1 and 11, the paper or felt would be fed to themachlne at the end A and carried through the machine in the same manneras described in the Wulff application aforesaid.

The upper series of chain carried bars 1, Figures 1 and 11, are drivenby thesprockets 2 and chain 3, the chain also running over the sprockets4.

. Similarly the lower series of bars 5 carried sov by the chain 6 aredriven by the sprockets 7, the chain passing around the sprockets 8.

The upper sprockets are mounted on shafts 9 and 10, and the lowersprockets on shafts 11 and 12, the shafts 9 and 11 being con-` nected bysuitable gears not shown, so a driving pulley keyed to the shaft 9 willdrive both sets of chains at a uniform speed.

The bars `1 and 5 carry dies and knives as described in my priorapplication aforesaid,

and also the lower bars carry lock block 13,

adapted to lock into sprockets 14 in the upper bars, as also describedin my applicationA aforesaid.

`I have found that when operating upon material of a tacky nature, suchas asphalt impregnated felt and the like, it is necessary to clean andlubricate the male members o f than to attempt to clean an ,accumulationfrom the dies after a more or less indefinite period of operation.

l have accordingly provided my machine with tanks or pans in which iskept a supply of what is ordinarily known as a cutting compound whichunites a certain amount of lubricating qualities with cleaning qualitiesso that when the male members of the dies dip into this compound theasphalt is prevented from sticking thereto, or if it sticks for a shortperiod of time, is soon washed off and in addition the dies are keptlubricated, so the reciprocating'movement of one member in the other isaccomplished with a minimum amount of wear on the dies, and the materialis cut and formed with a minimum amount of power, and in a uniformmanner during a continuous run of the machine.

Looking at l41 igure 1, it will be seen that a pan 15 is positionedbelow the lower bars so as to allow the male die members to dip into theliquid carried in the pan.

As this pan may extend through a considerable portion of its entirelength of the lower horizontal travel of the bars, the male members ofthe dies will always drop to their lowered position, while they aretravelling horizontally from right to left, and be cleaned andlubricated.

lt will be seen that the upper set of bars is offset to the right, withrespect to the lower set of bars, so as to give an overhang to the upperseries of bars at the right hand end of the machine, as shown in Figure1.`

A pan 19 is positioned below this overhanging end and is supplied withacompound similar to that used in the lower pan so the male members ofthe dies carried by the upper bars may dip into this compound and becleaned and lubricated.

As the travel of the bars across the length of this pan is short, I finditadvisable to positively force the male die members into their lowerposition rather than to depend upon their assuming that position bygravity.

Also it will be evident that these members must be carried in theirupper retracted position until they pass beyond the lip 2O of the pan19.

When the lower die members reach the cam 21 in their travel from left toright they are forced upwardly, thus lifting the corresponding memberabove.

The upper dies or knives, as the case may I be, 22, and strips 23positioned across the top thereof form projecting lips 24 and these.lips are raised above the rails during their travel to the point 26.

As the lips leave the rails at 26, if the die members do not fall bygravity into their lowered position, they are forced down wardly by thetwo cams 27 into their lowered position shown at 28, so the die mem`messia bers travel a predetermined distance through the compound. (Seealso Figure .7.)

it will thus be seen that if the male die members in both upper andlower sets of bars must of necessity be cleaned and lubricated beforethey return to operative relation, one to another, in the left hand endof the machine, and as the cleaning and lubricating is done by dippingthe ends of the members into the compound, the amount of lubrication iseasily regulated so the bars themselves do not become covered with thecompound, and hence the material worked upon is not smeared up with thecompound, as would be the case were the entire bars cleaned orlubricated.

lin making shingle strips using cut away dies of the shape shown at 22,Figure 7, the method described herein has a particular advantage.

As the ends of the dies have been dipped in the fluid, when the dies areactuated by their cams in punching out the strips of material so as toform the shingle tabs, the material that is punched out is lubricated bythe surface of the die forced against it dur ing the cutting operation,and when this male member of the die travels down into the female memberof the die bar below, the sides of this female memberI of the die arelubricated and continuously kept lubricated so that the strips punched'out pass freely through the die bar instead of collecting in a solidmass of piled up strips, as would be the case if the die was notlubricated.

rThis is an important feature in operating dies of this class onmaterial of this nature, as it takes an enormous amount of power toforce the punched out strips of the tacky material through the femalemember of the die unless this die member is kept'continuouslylubricated.

Looking at Figure 1l it will be seen that the lock blocks 29, also shownin Figure 6, are in a lowered position as they pass over the pan 16, andhence these lock blocks are also lubricated by the compound so theyreciprocate freely in their co-acting sockets.

The operation of the dies is carried out between the points 30 and 31,Figure 1, and guides 32 and 33 hold lthe two sets of bars in theirproper relation, one with the other, while the operationsof the dies arecarried out.

While it is necessary to hold the two sets of bars in close andsubstantially rigid relation :with the adjacent faces forced tightlyagainst the material that is being worked upon, I find that on accountof the variation in thickness-of material and other causes, that somemovement should be allowed without unduly straining the machine.

Hence, instead of mounting both of the guides 32 and 33 rigidly on theframe of the machine, l( mount eine of them, preferably lll@ the lower,rigidly on the frame, and support y the upper guide against a novelheavy spring backln As sIiown in Figures'8, 9, and 10, three shafts, 34,35 and 36 are journalled in the frame members 37 and 38. Keyed to eachof the shafts are levers 39, and studs 40 extend downwardly from theselevers and impillle on the guide 32 at 41.

eyed to the outer end of the shafts are levers 42, extendin ing theirlower en s formed into heads 43, with a ertures 44 therein.

Brac ets 45 mounted on the frame of the machine carry shafts 46 andsprings 47 concentric with the shafts 46 abut against washers 48, whosemovement to the left is limited by nuts 49, threaded or otherwisefastened to the shafts '46.

The heads 43 of the levers 42 are concentricly mounted with the shafts46, the shafts extending through the apertures of the heads, so thecompression of the springs 47 tend to rotate the levers 42 in acounterclockwise direction, and hence the studs 41 are presseddownwardly against the guide 32.

By this arrangement I secure a heavy downward pressure on the guide 32,and yet the guide is so mounted that it may be lifted slightly ifsutlicient upward pressure is created, or either end may liftindependently of the other, so that paper of more than the standardthickness may pass through the machine withoutv doing any damage to themechanism.

Bolt 50 extends downwardly from the guide guard 51 into an aperture 52-of the guide 32, to prevent longitudinal movement of the guide underinfiuence of the travelling bars and yet allow a slight vertical ortipping movement to the guide under excessive pressure.

While I have described my invention and illustrated it in one particulardesign, I do not wish it understood that I limit myself to thisconstruction, as it is evident that the application of the invention maybe varied in many ways within the scope of the followingI claims:

Claims:

1. In a machine for making shingles through the operation of diescarried in travelling die bars.. the combination w'ith` a frame, ofmultiple die bars, a stationary guide for said die bars carried by theframe, and a spring mounted guide for said die bars likewise carried bysaid frame for holding said die bars firmly against the material to beoperated upon, while passing between said guides and means for causingsaid die bars to travel with respect to said guides.

2. In a machine for making shingles the combination with the frame ofthe machine. of multiple die bars, means for causing said die bars totravel along said machine, means downwardly, and havfor operating diescarried by said die bars, a guide extending alon said machine to support said die bars while said dies are actuated, a bell crankv rotatablymounted in the .frame of said machine and havin one end. lmpmgmg on saidguide, and spring means associated with the other end of said bellcrank, for creating pressure between said first named bell crank end andsaid guide.

3. In a machine for making shingles the u combination with multiple1^travelling die b a-rs, of a frame, a guide for positively posltlomngsaid die bars and causing said die bars to move in a straight linethroughout a portlon of their travel, and two spring pressure meansconnecting said guide with..

the frame of the machine for pressing said ling means, a pan positionedso that said travelling means will pass thereover, and means for dippinga portion of said dies into Huid carried by said pan.

5. In a machine-for making` shingles the combination of a frame, endlesstravelling means mounted in said frame, slidable dies carried by saidtravelling means, means for retracting said slidable dies, means forforcing said slidable dies to an extended -position, and a pan sopositioned that said dies will dip into the fluid contained therein whenpassing thereover in their extended position.

6. In a machine for making shingles the combination of a frame, twoendless travelling means mounted in said frame, cop-operating die barscarried by said travelling means, means for locking co-operating barstogether during a portion of their travel. said locking means travellingin an extended position during a portion of their travel, and a pan sopositioned as to allow said locking means to dip therein when extended,so as to be lubricated by fluid carried by said pan.

7. The method of operating dies comprising the carrying of said dies onendless travelling means, feeding material to said dies. actua ting saiddies to Work onl said material. lifting said dies from said material,carrying said, dies in their lifted position and then causing said diesto dip into a fluid.

8. The method of operating dies comprising the carrying of said dies onendless travelling means. feeding material to said dies. actuating saiddies to work on said material. and then causing said dies to dip into afluid and after being Withdrawn from said Huid return to a position torepeat the cycle of operations.

yliti) ,413 rae 9. The rmethod .of operating dies including a male and afemale memberI7 comprising the carryinv of a die on endless travelling`l: means, lubricating the operating end oli said male member, feedingmaterial to s aid die,

actuating said die to work on Said material, whereby said materialworked'upon is lubricated.

10. rl`he method of operating dies including a male and a female member,comprising the carrying' of a die on endless travelling1 means,lubricating the,operating,` end of said male member, feeding materlal tosaid die.,

actuating said die to Work on said material, u

ame

whereby said material `Worlred upon is lubricated, and the side walls ofthe ijemale inember are lubricated by the entrance therein ot thelubricated male member.

1l. 'lhe method of operating dies, inelndon material ted thereto,whereby the female member of the die may be lubricated by thelubrication from the male member oit the die.

SlLAS M. FRD.

